SAFETY  GAS  MACHINE 

COMPANY. 


OFFICES: 

No.  m Sansom  Street,  Philadelphia, 
No.  110  Liberty  Street,  New  York. 


Henby  B.  Ashmead,  Book  and  Job  Printer,  1102  & 1104  Sansom  Street,  Philadelphia. 


THE  MANUFACTURE  OF  GAS. 


HE  fundamental  principle  essential  to  success  in  mak- 


ing  gas  from  any  volatile  fluid,  is  that  TIIE  MATE- 
RIAL MUST  BE  SUPPLIED  EXACTLY  AS  EAST, 
AND  ONLY  AS  FAST  AS  IT  IS  USED.  It  required 
years  of  costly  and  persistent  trial  to  effect  this  simple 
discovery;  but  now  that  it  has  been  made,  the  reason  for 
it  is  plain  to  he  seen  of  all  men.  Evaporation — converting 
a fluid  into  vapor  or  gas — absorbs  heat.  Evaporation, 
sufficiently  rapid  and  long  continued,  will  result  in  freezing. 
The  most  volatile  fluids,  such  as  ammonia  and  chloroform, 
can  be  reduced  to  solidity  by  evaporation.  Consequently, 
when  any  highly  carbonized  fluid  is  subjected  to  a current 
of  air  and  vaporized — making  illuminating  air-gas — the 
tendency  of  the  operation  is  to  cool  the  material,  and  it 
presently  becomes  so  condensed  that  evaporation  stops  : 
the  production  of  gas  ceases.  The  chilled  fluid  must  be 
disposed  of  in  some  Avay,  and  a new  supply  provided  before 
the  work  can  go  on.  To  meet  these  difficulties,  numerous 
devices  have  been  invented,  and  time,  money,  and  energy 
expended  without  stint.  Partial  successes  have  been 
attained,  and  offered  to  the  public  under  various  names, 
but  the  problem  never  was  fairly  solved  until  the  discovery 


of  the  KEYSTONE  FEED.  This  simple  device  settles 


6 

the  whole  question  ! It  supplies  the  material  exactly  as  fast, 
and  only  as  fast  as  it  is  used. 

This  is  apparently  a trivial  matter,  but  it  is  to  just  such 
seeming  trifles  we  owe  the  most  important  inventions. 
The  Yankee  notion  of  putting  the  eye  in  the  point  of  the 
needle  gave  us  the  sewing  machine ; the  single  idea  of 
turning  the  exhaust  steam  into  the  smokestack  made  possi- 
ble the  locomotive  and  the  railroad ; and  so  the  happy 
suggestion  of  the  KEYSTONE  FEED  opens  the  way  to  a 
wide  field  of  improvement,  the  extent  of  which  cannot 
yet  be  limited. 

GASLIGHT  FOR  ALL. 

The  immediate  effect  has  been  to  put  a PERFECT 
GASLIGHT  within  reach  of  every  family  in  the  land. 

In  combination  with  other  inventions,  this  feed  is  used 
in  the  KEYSTONE  SAFETY  GAS  MACHINE,  an 
apparatus  destined  to  supersede  kerosene  lamps,  and 
other  dangerous  devices,  in  all  intelligent  communities. 
VILLAGES,  CHURCHES,  RURAL  HOMES,  IN- 
STITUTIONS, SCHOOLS,  FACTORIES,  HALLS, 
LIBRARIES  and  PUBLIC  BUILDINGS  can  be  sup- 
plied with  gaslight  as  perfectly  as  the  largest  city,  at 
cost  not  exceeding  one-quarter  the  average  price  of 

city  gas. 

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The  KEYSTONE  apparatus  may  be  placed  in  a vault 
(as  shown  on  fourth  page),  at  any  desired  distance  from 
the  premises  to  be  lighted.  It  can  be  supplied  and  wound 
up  from  outside  the  vault,  and  need  never  be  touched, 
except  at  long  intervals,  to  oil  the  bearings.  It  can  there- 
fore be  used,  with  absolute  safety,  for  any  of  the  gas- 
producing  fluids  known  to  commerce,  and  will  make  gas 
more  perfectly1  than  any  other  mechanism  ever  devised, 
from  any  of  these  substances.  But  we  especially  recom- 
mend, for  use  in  our  machine,  and  every  other  machine, 
our 

KEYSTONE  HYDROCARBON  OIL. 

We  manufacture  this  Oil  expressly  for  gas-making  pur- 
poses, and  confidently  offer  it  as  the  best  material  for  this 
use  yet  discovered.  It  is  SAFE,  CLEAN  and  ECONO- 
MICAL. It  is  admirably  adapted  for  this  service,  giving 
a pure  Hydrocarbon  Gas  which  burns  with  an  intense 
white  flame  of  great  illuminating  power,  yet  soft  and  plea- 
sant to  the  eye.  And  we  will  guarantee,  that  in  our 
KEYSTONE  machine  every  drop  of  the  oil  will  be  con- 
verted, leaving  not  one  particle  of  residuum  of  any  kind. 


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PRICE  LIST. 


No. 

Number  of  Lights. 

Price. 

1 

5 

$180  00 

2 

10 

225  00 

3 

15 

270  00 

4 

20 

315  00 

5 

25 

360  00 

6 

30 

400  00 

7 

40 

470  00 

8 

50 

535  00 

9 

60 

600  00 

10 

70 

660  00 

11 

80 

720  00 

12 

100 

820  00 

13 

125 

910  00 

14 

150 

1000  00 

15 

200 

1200  00 

16 

250 

1400  00 

17 

300 

1600  00 

18 

500 

2200  00 

The  above  prices  are  for  machines  delivered  at  steamer  or  railroad  in 
Philadelphia,  in  perfect  order,  ready  to  run,  and  include  pulleys,  cord 
and  weights. 


We  send  a man  to  place  the  machine,  charging  actual  cost. 

Contracts  made  for  lighting  Factories,  Mills,  Works,  etc.,  using  hydraulic 
pressure  or  air-blast  from  a forge-blower,  or  taking  motion  from  machinery. 


Churches,  Schools,  Institutions,  Residences,  etc.,  piped  at  lowest  rates. 
Pipes,  Fixtures,  Gas-Logs,  Gas-Stoves,  etc.,  furnished  at  manu- 
facturers’ prices. 


Keystone  Hydrocarbon  Oil  in  quantities  to  suit. 


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